Cracking/Hacking Windows Passwords (UPDATED: VISTA Too!!)

Instructional/Educational Purposes only.
Be nice kids.

First of all, and I have to say this because of some recent comments, this is not a virus, and will not delete any files from your computer. In fact, ophCrack, the software we're gonna use is a very popular password cracker. Google it or Wikipedia it if you don't believe me.

This works for WINDOWS ONLY

This will crack all windows passwords up to 14 digits on a computer.
You need physical access to the computer.
You don't need to be logged in (that's what this is for).
It will tell you all user names and passwords on the computer.

Step 1: Get the Resource

1. Go here:

2. Download the latest version of ophcrack live cd. To crack passwords on an XP computer select 'ophcrack XP LiveCD'. To crack passwords on a VISTA computer select 'ophcrack VISTA LiveCD'.

3.The software you download will be a CD image (.iso format). If you try opening this on a computer with a CD-Writer and CD-Writing Software (eg. Nero, Roxio, Record Now, or whatever you have) it will write that file to a CD.
So, make the CD

Step 2: Crack

1. Make sure the computer you intend to crack is off.

2. Turn on, and instantly pop in the CD you just created.

3. By this time, windows might have started loading. So, turn off computer by holding down power button and then turn on again. What you want to do is boot from the CD. This can be done in two ways:
a. Often pressing one of the function keys (depending on manufacturer) takes you into the BIOS setup (the first splash screen that pops up when you turn on your computer should tell you which one: often F2, F11 or F12.) There, you should look around until you find where you can change the boot order (this differs from company to company depending on your computer brand). Change the boot order, so the computer first boots from CD then from Hard Disk.
b. There is often another function key (again depending on manufacturer) which enters you into the boot selection menu where you can select where to boot from. Hit boot from CD.

4. Watch as the CD loads. It will load a temporary version of linux on to the ram, dump all user names in a box and start processing. This software can only crack passwords up to 14 digits. As it deciphers the passwords, it will decipher each password in two blocks of 7 characters each, and then show you the whole password as a combination of those two under the column labeled 'net password'.

5. Vola! In about 5-10 minutes you have all the user names and passwords on that computer.



    • Paper Contest

      Paper Contest
    • Tape Contest

      Tape Contest
    • Trash to Treasure

      Trash to Treasure

    239 Discussions


    3 years ago

    I have completed everything, but it says that the password could not be found. Any suggestions as to what to do next?

    1 reply

    3 years ago on Introduction

    I have a youtube channel dedicated to this kind of thing guys.

    Here is my tutorial video using a similar process to above.


    4 years ago on Introduction

    Well, I don't thinks cracking is a good idea, maybe you can recover Windows Vista password which can keep important data in your computer. I suggest you can use some Windows password recovery tool, there are many and you can search them on Google


    5 years ago on Introduction

    Aftear launching the cd it comes to a screen that says "Welcome to open source SliTaz boot time: 12 s. Run: 'ophcrack dialog' to search again for tables. tux@slitaz:~$" I'm assuming it is waiting for a command. I have a vista hplaptop and made sure I downloaded the live cd for vista. Can anyone help

    1 reply

    Reply 4 years ago on Introduction

    When I lost my Windows password, I try to find out one program from Google, finally use a tool to crack the Windows 7 login password, and it seems to supports all the Windows OS. I got this smart Windows key from CNET website: Windows password recovery


    5 years ago on Step 2

    kernel panic – not syncing: Attemped to kill the idle task – this is what I got on the screen after selecting a mode with Ophcrack.. and downloaded the file twice and burned it twice.. got the same message..Eventually I purchase the paid software Password Recovery Bundle and it works! Thanks any way!


    7 years ago on Introduction

    ok so i put the boot up menu in the right order, i went into the bios set up and changed the boot sequence to "CD/DVD/CD-RW Drive" then "Internal HDD" and i hit esc and then it went through the black linux screen and scrolled down and then went to this white screen that says "ophcrack Live CD" with 4 characters to the side and options to the right. asking for "ophcrack Graphic mode - automati, manual. low ram, and text mode." it started automatically in auto mode and then went to this black screen again and loaded a bunch of dots.

    after that it went to this next screen that was all brown and had a large OS in the corner and ophcrack LiveCD along the top and this black box menu that stated. "tables found (mntsr0tablesvista_free), and "list of windows partitions containing hashes (0. mnt/s da2/windows/system32/config)(1. /mnt/s da3/windows/system32/config)", and then "select the partition to crack::" ...what did i do wrong or what am i suppose to do...i have a dell studio with windows vista please help.


    10 years ago on Step 1

    I have tried about 7 of these instructables to go around or reset admin. password and NONE OF THEM work.

    6 replies

    Reply 8 years ago on Step 1

    ive tried at least 15 of them already and its just like you.  NONE OF THEM WORK!!!!


    Reply 10 years ago on Step 1

    i read your instructable first of all the account needs to be an administrator also it dose not work for vista i dont really like it (no offence to you what so ever)


    Reply 10 years ago on Step 1

    boom-man, the account does NOT need to be an administrator (at least not on the computers i've tried, i have no clue where you've tried) i never said it would work for vista, it says WINDOWS XP in there, just read it carefully. i really don't care that much whether you like it or not, any feedback is good feedback.


    Reply 10 years ago on Step 1

    try harder, but you're right, most of them only work when you're already admin... This will work (if bootCD isn't locked down in bios) mine will work too I haven't seen other methods on here